Forewarning, this joke is very explicit.
So there's this talent agent, sitting at his desk one day. And this family walks in. Strong, young guy, late twenties. Trophy wife, and a beautiful son and daughter. So the guy says "We've got a wonderful act for you!".
Talent agent goes "Honestly, it's hard to book family gigs.".
"But, if you let us show you our act I know you'll book us!" the man says.
"Fine, let's see what you've got."
The talent agent takes the family out to the empty theater and takes his seat in the front row.
The man walks out on stage wearing a nazi uniform, and his wife comes out in a pope costume. He immediately bends her over and starts fucking her in the ass as hard as he can. When he finally pulls out, it makes a sound similar to a wet cork coming out of a wine bottle. The man cums all over her ass, and immediately lays down on his back on the stage, as his wife proceeded to shit all over his face and in his open mouth. He gurgles the shit and his cum in his mouth for a while, until he rolls over and throws up all over the stage. His two children then come in from the side, and they start rolling around in the mixture of their mothers shit and their fathers cum and vomit. Meanwhile the man and his wife are shitting on the floor and rubbing it all over themselves. Then the children begin to throw up, which makes the man and wife throw up as well. So all four of them are on stage, throwing up everywhere. The little boy even manages to get a little on the agent sitting in the front row. Once they all finally stop, they look at the agent, and in unison say "TADAAAAAA!!"
The talent agent, chunks of the boys vomit still clinging to his shirt, says "Damn. That was sure one hell of a show." He pauses, "What do you call yourselves?"
The man looks at him and says simply, "The aristocrats."